countdown timer milliseconds android studio github

”Save” is used for saving time results in a text file. It’s function is to change the boolean stopwatchRunning to false in order to stop the time or to true to resume paused time. Data that is saved is composed of: lap number, total time from the beginning, with precision of milliseconds and the time of the lap itself. It uses a listBox container to show the laps. The “Lap” button is used for counting laps. This method is executed when the boolean stopwatchRunning is true. In the same way seconds, minutes and hours are also checked. When the milliseconds are composed of a two-digit number only “0” is added. When the milliseconds are composed of one digit “00” is added in front of it so that a three-digit number is shown on the screen. Values are also checked for their correct representation. They are taken from the system time to avoid using a high-precision timer. Milliseconds however are not connected with this process. Seconds, minutes and hours are changed in a similar way as the countdown timer. In this way when tempSeconds2 becomes 60, it immediately changes to 0 and the minutes get increased by 1. To avoid the situation when tempSeconds1 is 59 and tempSeconds2 to become 60, I’ve used a boolean called “sixty”. When this happens tempSeconds2 gets increased by 1 and the process begins again. When 1 passes tempSeconds1 becomes equal to tempSeconds2 and this indicates the passing of a second. tempSeconds2 is declared as tempSeconds1 + 1 second. tempSeconds1 and tempSeconds2 are used to indicate the interval of a second. First, seconds from the system time are saved into the variable tempSeconds1. It’s used to replace a high-precision timer, which would take lots of system resources. Realizationįor the stopwatch I’ve used the system time. It starts after the Start button has been pressed and it’s executed once in every 33 milliseconds, which means that the refresh interval of the time is also 33ms.

TempSeconds2 = ( byte)(tempSeconds1 + 1)

Countdown timer milliseconds android studio github